docs: def get_alpha(self, x: int, y: int) -> int:
          """Get the Image alpha of the pixel at x, y.
  
          Args:
              x (int): X pixel of the image.  Starting from the left at 0.
              y (int): Y pixel of the image.  Starting from the top at 0.
  
          Returns:
              int: The alpha value of the pixel.
              With 0 being fully transparent and 255 being fully opaque.
          """
          return lib.TCOD_image_get_alpha(self.image_c, x, y)